Answer:
A. We can select a lower confidence level and increase the sample size.
Step-by-step explanation:
The length of a confidence interval is:
Direct proportional to the confidence interval. This means that the higher the confidence level, the higher the length of the interval is.
Inverse proportional to the size of the sample.This means that the higher the size of the sample, the lower, or narrower, the length of the interval is.
Which of the following could we do to produce higher precision in our estimates of the population proportion?
We want a narrower interval. So the correct answer is:
A. We can select a lower confidence level and increase the sample size.
Let's assume
length =l
width =w
we are given
the width of a rectangle is 7 feet less than its length
so, we get
now, we know that
area = length*width
now, we can plug w
we have
Area=170
now, we can factor it
now, we can solve for l
now, we can find width
so, dimensions are
...............Answer
Step-by-step explanation:
=((5m+6)(m−7)(5m+6))(m)+((5m+6)(m−7)(5m+6))(−7)
=25m4−115m3−384m2−252m−175m3+805m2+2688m+1764
=25m4−290m3+421m2+2436m+1764
